iOS 6.1.3 patches up Evasi0n jailbreak: hold your updates

Yesterday, Apple released iOS 6.1.3 unto the public, and it came with a couple of big updates as well as some general bugfixes and performance improvements. However, it also patched up some of the exploits used by the Evad3rs dev team in order to jailbreak iOS 6.1, which means that if you update to iOS 6.1.3, you'll lose your jailbreak.